No Picture Ch/Mx/Pa2/Col/Aus/Nz/Br/Uc/Hk/Tw (Bmx) - Sony XBR-55X850C Service Manual

3-5-4. No Picture CH/MX/PA2/NZ/AUS/BR/COL/BR/UC/HK/TW (BMX)
No Picture Video
Component
No Picture
Check if input OSD
OK if it is highlighted
C7515/C7518/C7520
Muffin [IC1000]
XBR-55/65X850C, 855C, 857C, 75X850C, 855C
NG
*
Check J7504 Con
is GREY OUT
VIDEO_DET at R7539,
CR_DET at R7538
OK
OK (Vpp: 3.3 V)
** Detailed check all parts
at VIDEO_DET signal
Path [R7535] and CR_DET
signal path [R7534]
OK (Vpp: 3.3 V)
Check wave
NG (Vpp: 0 V)
Between
and IC1000
OK (Vpp: 1 V)
J7504 Connector
Problem Problem
 OK Condition : No solder splash can be seen
*
 NG Condition : Solder splash can be seen
NG (Vpp: 0 V)
NG (Vpp: 0 V)
**
Detailed check all parts
at signal path of:
Y1P : [D7530/R7524/C7514/
R7527]
PB1P : [VD7508/R7529/C7517/
R7530]
PR1P : [VD7509/R7532/C7519/
R7553]
OK
J7504 Connectivity
Problem
**
TROUBLE SHOOTING
NG
Parts Broken
 OK Condition : No part short-circuited
 NG Condition : Part short-circuited
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